Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Barreto, E. Ramirez"'
It is remarkable that the measured Higgs boson mass is so close to the value which maximizes the Higgs decay rate to photons as predicted by the Standard Model. In this work we explore the consequences to assume that an $\sim 125$ GeV Higgs boson mas
Externí odkaz:
http://arxiv.org/abs/1312.5333
Some extensions of the standard model predict the existence of particles having two units of leptonic charge, known as bileptons. One of such models is based on the $SU(3)_c\times SU(3)_L\times U(1)_X$ symmetry group (3-3-1 model, for short). Our sea
Externí odkaz:
http://arxiv.org/abs/1307.4683
We present a new model based on the SU(3)xSU(2)xU(1) symmetry, in which there is a new consistent set of chiral fermion fields that renders the model free from anomalies. The new fermions do not share the usual family structure of the Standard Model
Externí odkaz:
http://arxiv.org/abs/1306.1275
Autor:
Alves, Alexandre, Dias, A. G., Barreto, E. Ramirez, Pires, C. A. de S., Queiroz, Farinaldo S., da Silva, P. S. Rodrigues
We show that the recent discovery of a new boson at the LHC, which we assume to be a Higgs boson, and the observed enhancement in its diphoton decays compared to the SM prediction, can be explained by a new doublet of charged vector bosons from an ex
Externí odkaz:
http://arxiv.org/abs/1207.3699
Within the 3-3-1 model framework, we consider the production and decay of fermionic leptoquarks into a striking experimental signature at the LHC: a narrow resonance at the $b$ jet plus same-sign dileptons channel. The data already accumulated by the
Externí odkaz:
http://arxiv.org/abs/1203.2342
Autor:
Alves, A., Barreto, E. Ramirez, Dias, A. G., Pires, C. A. de S., Queiroz, F. S., da Silva, P. S. Rodrigues
Publikováno v:
Phys. Rev. D 84, 2011, 115004
We investigate the Higgs boson production through gluon fusion and its decay into two photons at the LHC in the context of the minimal 3-3-1 model and its alternative version with exotic leptons. The diphoton Higgs decay channel presents an enhanced
Externí odkaz:
http://arxiv.org/abs/1109.0238
We perform a study of the charged Higgs production from an $SU(3)_{C}\otimes SU(3)_{L}\otimes U(1)_{X}$ model with right-handed neutrinos, postulating a custodial symmetry which reduces the number of free parameters in the scalar potential. We comput
Externí odkaz:
http://arxiv.org/abs/1105.4849
Publikováno v:
Phys.Rev.D83:054006,2011
The forward-backward asymmetry $A_{FB}$ in top quark pair production, measured at the Tevatron, is probably related to the contribution of new particles. The Tevatron result is more than a $2\sigma$ deviation from the standard model prediction and mo
Externí odkaz:
http://arxiv.org/abs/1103.1266
Publikováno v:
Phys.Rev.D83:075001,2011
We study the double-charged vector-bilepton pair production and double-charged scalar-bilepton pair production {\it via} $p + p \longrightarrow Y^{++} + Y^{--} + X$ and $p + p \longrightarrow S_1^{++} + S_1^{--} + X$, where $Y$ and $S_1$ are vector a
Externí odkaz:
http://arxiv.org/abs/1103.1267
Publikováno v:
Phys.Lett.B689:36-41,2010
We search for signatures of the extra neutral gauge boson $ Z^\prime$, predicted in some extensions of the Standard Model, from the analysis of some distributions for $p + p \longrightarrow \mu^+ + \mu^- + X$, where the only exotic particle involved
Externí odkaz:
http://arxiv.org/abs/1004.3269